Autocar's UK perspective focuses on the 8 Series' handling on twisty roads. They tested the M850i xDrive and were impressed by the rear-axle steering and active anti-roll bars, which keep the large coupe flat and agile. The V-8's power delivery is described as 'seamless' with a lovely deep growl. The adaptive suspension's Comfort mode offers a plush ride, but Sport mode can become fidgety on poor surfaces, unlike the more supple Audi S8. Autocar appreciates the upscale interior, noting the quality of the materials and the intuitive layout, though they find the touchscreen interface less intuitive than the old iDrive controller for some functions. They comment on the limited rear visibility and the obstructive B-pillars. The magazine also notes the 8 Series is expensive; for similar money, one could get a more focused sports car, but for a stylish, comfortable, and rapid grand tourer, it is hard to beat. They award it 4 stars, concluding it's an 'impressive all-rounder' with a slightly softer edge than its German rivals.

Car and Driver praises the 8 Series for combining grand-touring comfort with genuine sports-car ability. The M850i xDrive's 523-hp twin-turbo V8 and standard all-wheel drive deliver effortless acceleration and confident handling, while the M8 Competition offers supercar-level performance. The upscale cabin and iDrive infotainment are highlights, but rear-seat space and trunk practicality suffer, and fuel economy is poor. Still, it earns an Editor's Choice nod over rivals thanks to its driving engagement.